Walker, Angus. Marx: his theory and its context : politics as economics : introductory and critical essay on the political economy of Karl Marx / Angus Walker. - London : Longman, 1978. - xi, 241 p. ; 22 cm. Includes index. Includes bibliographical references. ISBN: 058244196X (pbk.) Subjects--Personal Names: Marx, Karl. Subjects--Topical Terms: Marxian economics.